22321-4244 I 1455 (HD 213436)

 
 
22h 32m 03.15s -42° 44' 24.4" P.A. 350.00 sep 0.3 mag 8.30,8.60 Sp K0IV dist. 139.08 pc (453.68 l.y.)
 
 
Coord 2000 22321-4244 Discov num I  1455 Comp Coord arcsec 2000 22 32 03.15 -42 44 24.4
Date first 1925 Date last 2017 Obs 15
Pa first 249 Pa last 350.4 P.A. Now (θ) 348.7°
Sep first 0.3 Sep last 0.329 Sep. Now (ρ) 0.331"
Mag pri 8.30 Mag sec 8.60 delta mag (ΔM) 0.3 Spectral class K0IV (yellow-orange)
Pri motion ra +017 Sec motion ra
Pri motion dec +023 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 213436 Constellation Grus SAO 231187 HIP 111223
Tycho2 8003-00677-1 Gaia DR2 6521102210490215296 HD 213436 CD CD-4315073
CP CP-43 9626 Distance 139.08 Distance ly 453.68
 
 
ORBITAL ELEMENTS
 
 
Period (P)79.7y Periastron (T)1999.1y Semi-major axis (a)0.336a
Eccentricity (e)0.857 Inclination (i)97.6° Longitude of periastron (ω)65.8°
Node (Ω)179.1° Notesn ReferenceTok2018b
Equinox2000 Last observation2017 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 5.2 0.057
2001 0.2 0.116
2002 358.3 0.156
2003 357.1 0.187
2004 356.2 0.211
2005 355.5 0.232
2006 354.9 0.249
2007 354.4 0.263
2008 353.9 0.275
2009 353.5 0.286
2010 353.1 0.295
2011 352.7 0.303
2012 352.3 0.309
2013 352.0 0.315
2014 351.6 0.320
2015 351.3 0.323
2016 350.9 0.326
2017 350.6 0.329
2018 350.3 0.330
2019 350.0 0.332
2020 349.7 0.332
2021 349.4 0.332
2022 349.0 0.332
2023 348.7 0.331
2024 348.4 0.329
2025 348.1 0.327
2026 347.8 0.325
2027 347.4 0.323
2028 347.1 0.320
2029 346.7 0.316
2030 346.4 0.313


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds22321-4244a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic